Surgical bandage.



E'. M. POND.

SURGICAL BANDAGB. APPLIoATIoN FILED 0011.23, 1907.- nnnnwnn mm: z, 1910.

Patented N0v.'1, 1910.

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UNITED STATES PATENT OFFICE.-

EDMUND Monsn POND, or RUTLAND, maramotti".y

SURGICAL BANDAGE.

specification of Letters Patent. Patented Nov. 1, 1910.

i Application-.tiled October 23, 1907. Serial No. 398,796. Renewed June 2, 1910. Serial No. 564,683.

To all who-m it may concern:

Be it known that I. EmnfxnMoRss POND, a citizen of the Vnited States of America, and a resident of Rutland, county of Rutland, State of Vermont, have invented certain newT 'and useful Improvements in Surgical Bandages, of which the following is a specification.

My invention relates to surgical bandages or medicated dressings for wounds, and has for its object the production of a bandage which Will both hold the medicament in contact With the wound and permit the escape. of the pus and other matter given olf by the wound.

The best form of bandage at present known to me embodying my invention is illustrated in the accompanying drawing, in which: 'Y

Figure l is a face view of the bandage, and Fig. Q is an exaggerated longitudinal section on line Q--Q of Fig. l.

Throughout the drawing like reference figures indicate like parts.

l is a sheet or layer of gelatin or similar substance capable of being gradually dissolved by the heat and moisture of the patients body. This layer of gelatin is usually medicated and is of sufficient thickness to last for solne time under the dissolving action of the warmth and moisture of the body with which it is placed in Contact. This gelatin may also be mixed with some finely ground absorbent material such as oakum, gauze, bran, etc.

2 is a sheet of oil silk or rubber tissue.

3 is a layer of gauze or other fibrous absorbent material. 4 another layer of material similar to 2.

5 is loose absorbent material usually of finer texture, and (3 is the containing layer of cloth or other fabric.

After the layers l, 2 and 3 are assembled, the structure so formed is perforated to form cross sectional channels T, 7 If desired, these holes 7, 7, may also extend through the layer 4,

In operation the heat and moisture of the Wounds slowly dissolves the gelatin and constituents of layer 1. The dissolved materials and the excretions of the wound pass out through the holes 7, 7. The coarser substances so expelled are taken up by the layer 3 of gauze. The liner and liquid portions vents the Warm half melted gelatin `fro'mbeing absorbedby the adjacent absorbentmaterial of layer 3, While'the material dissolved on the inner face of layer l, is freely expelled through the holes 7, 7. c

The advantages of my invention comprise its ability for fbreeing the face of the Wound of excretions and the fluid gelatin mixed therewith, while a continuous supply of pure medicated gelatin is maintained in contact with the wound, the complete absorption of the impure gelatin and secretions, and the preservation of the unused gelatin from premature absorption by the outer portions of the bandage. The perforations in the layer 3 increase the area of its absorptive surface and so enable it to take up more rapidly the matter coming through the perforations in sheet 2.

Some of the outer layers of material shown and described could be omitted without losing all the advantages of my invention so long as the )erforated layer of gelatin and the {luid-tig 1t layer of material next to it are retained with openings in line with the perforations inthe latin.

'hile I have specified gelatin, other equivalent substances of a healing or nonirritating character, capable of solution in water, or fusion at the normal temperature of the human body, such as cocoa butter or glycerin, might be substituted tor the gelatin to produce the same result.

Having, therefore, described my invention, l, claim 1. The herein described surgical bandage comprising a layer of elatin, and a. sheet formed of Huid-ti ht faric having perforar tions extending t rough both gelatin and backing sheet.

2. The herein described surgical bandage comprising a layer of gelatin, and a sheet formed of {luid-tight fabric having perforations extending through both, together with a backing of absorbent material.

The herein described surgicall bandage comprising a layer of elatin, and a sheet formed of {luid-tight fa )ric having erforations extending through both, togetI er with a backing of absorbent material and a. second sheet of Huid-tight material.

4. The herein described surgical bandage comprising a layer of gelatin, and a sheet formed of fluid-tight fa ric having perforapass on to the other layer 5 if the sheet 4 is tions extending through both, together with perforated. The rubber or oil silk 2,

prel a backing of absorbent material and a second sheet of fluid tight material, the perfo- :l rations also passingthrough the absorbent j material.

"7. The herein described surgical bandage,l

' comprising;` a think layer of material soluble sheet formed of fluid-tight material and a Second backing of finer absorbent. material, the gelatin, rst fluid-tight sheet and first layer of backing having perforations in line g one with the other ext-ending through them.

The herein described Surgical bandage comprising a layer of gelatin mixed with tinel)v ground absorbent material. and a' sheet formed of luid-tight nfabric having perforaln water at the normal temperature of the human body, and a backing formed of luidtight fabric provided with perforations, the soluble material having` .perforationsextending through it in line with the perforations in the fluid tight fabric.

Signed at Rutland, Vt.,

October 1907. i

EDLWIUND RIOB-SE POD. lVitnesses MARGARET A. Dwrnn,

MAUD A. BURTON.

this 1st day of 

